RosettaCodeData/Task/Fibonacci-sequence/UNIX-Shell/fibonacci-sequence-2.sh

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2023-07-01 11:58:00 -04:00
fib() {
local n=$1
[ $n -lt 2 ] && echo -n $n || echo -n $(( $( fib $(( n - 1 )) ) + $( fib $(( n - 2 )) ) ))
}